Select the statement that is true when comparing solutions with a pH of 6 and a pH of 8.
A. The solution with a pH of 8 has a 100 times higher concentration of hydrogen ions than a solution with a pH of 6.
B. The solution with a pH of 6 has a 100 times lower concentration of hydrogen ions than a solution with a pH of 8.
C. The solution with a pH of 6 has a 100 times higher concentration of hydrogen ions than a solution with a pH of 8.
D. The solution with a pH of 6 has a 2 times higher concentration of hydrogen ions than a solution with a pH of 8.
E. Solutions with a pH of 8 has a 2 times lower concentration of hydrogen ions than a solution with a pH of 6.
Answer: C
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In humans, hair texture is an incompletely dominant trait. Curly is the dominant genotype, wavy is heterozygous, and straight hair is recessive. What is the probable phenotypic ratio for a cross between a man with wavy hair and a woman with curly hair?
a. All wavy hair b. 3/4 wavy hair; 1/4 straight hair c. 1/2 wavy hair; 1/2 curly hair d. All curly hair e. 1/4 curly hair; 1/2 wavy hair; 1/4 straight hair
The troph of the motile T. vaginalis organism measures 7 to 23 m long and 5 to 15 m wide. The recommended treatment of choice for this urogenital infection is:
a. tetracycline. b. metronidazole. c. penicillin. d. ketoconazole.
The difference between a drupe and a berry is that a drupe:a
is an accessory fruit, while a berry is a multiple fruit. b. is formed from a single carpel, while a berry is formed from many carpels. c. has a stony pit around a single seed, while a berry is fleshy throughout with many seeds. d. is a dry fruit, while a berry is a fleshy one. e. splits open along two sutures, while a berry splits open along one suture.
In general, cyanobacteria prefer higher pH and temperature conditions than algae.
Answer the following statement true (T) or false (F)